Side effects of Chemotherapy and Immunotherapy in the feet. Is this one?

What medical condition do these signs and symptoms represent? 75 year old male Chronic Lymphocytic Leukaemia Incurable Adenocarcinoma of the Lung Completed Chemotherapy and started Immunotherapy previous week Hypertension and Heart Disease with history of two stents 10 years ago and last one 6 months ago Hypercholesterolaemia Presented with bilateral plantar metatarsal area pain especially when walking barefoot on hard floors. Greatly helped by the addition of slow recovery poron innersoles to patient’s extra depth footwear

What medical condition do these signs and symptoms represent? 75 year old male Chronic Lymphocytic Leukaemia Incurable Adenocarcinoma of the Lung Completed Chemotherapy and started Immunotherapy previous week Hypertension and Heart Disease with history of two stents 10 years ago and last one 6 months ago Hypercholesterolaemia Presented with bilateral plantar metatarsal area pain especially when walking barefoot on hard floors. Greatly helped by the addition of slow recovery poron innersoles to patient’s extra depth footwear

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Side effects of Chemotherapy and Immunotherapy in the feet. Is this one?